CN117553077A

CN117553077A - Clutch device

Info

Publication number: CN117553077A
Application number: CN202311652831.2A
Authority: CN
Inventors: 陈林
Original assignee: CHONGQING WANGCHENG TECHNOLOGY CO LTD
Current assignee: CHONGQING WANGCHENG TECHNOLOGY CO LTD
Priority date: 2023-12-05
Filing date: 2023-12-05
Publication date: 2024-02-13

Abstract

The invention provides a clutch device, and belongs to the technical field of clutch device structures. The device provides the force for compressing the central hub and the pressure plate when the central hub rotates along with the pressure plate through the design of the first spiral surface and the second spiral surface, thereby reducing the external force requirement for compressing the central hub and the pressure plate together, effectively reducing the pressure of a clutch operating mechanism and effectively increasing the torque capacity of the clutch power transmission. Meanwhile, through the design of the third spiral surface and the fourth spiral surface, when the brake is applied, the third spiral surface and the fourth spiral surface generate a mutual pushing force to assist the clutch device to separate, so that the separation action of the pressure plate and the center hub of the clutch device is more sensitive, namely, the clutch power output cutting-off performance is more excellent. The clutch device comprises a central sleeve assembly, wherein the central sleeve assembly comprises a pressure plate and a central hub, a first spiral surface and a third spiral surface are arranged on the pressure plate, and a second spiral surface and a fourth spiral surface are arranged on the central hub.

Description

Clutch device

Technical Field

The invention belongs to the technical field of clutch structures, and particularly relates to a clutch.

Background

The clutch plays a role of a power switch in the power transmission system, and the clutch operating device of the two-wheeled vehicle or the three-wheeled locomotive is a hand brake mechanism in a more conventional structural form.

When a driver brakes, the holding force applied to the hand brake mechanism and the bearing force of the pressure component in the clutch are positively correlated, the larger the bearing force of the pressure component in the clutch is, the larger the holding force which needs to be applied by the driver when the driver brakes, the more sensitive and thorough the power output of the power system can be cut off, and the holding force can not be excessively large when the driver brakes; however, since the bearing capacity of the pressure member in the clutch and the torque capacity of the clutch are positively correlated, the torque capacity of the clutch is minimally required, and it is difficult to reduce the grip strength of the driver while maintaining the clutch functionality unaffected.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a clutch device for solving the problem that it is difficult to ensure that the functionality of the clutch device is not affected while reducing the grip strength of the driver during braking.

To achieve the above and other related objects, the present invention provides a clutch device, including an outer cover assembly and a center sleeve assembly, wherein the center sleeve assembly includes a pressure plate and a center hub, a first spiral surface is provided on the pressure plate, a second spiral surface is provided on the center hub, and spiral angles of the first spiral surface and the second spiral surface are the same; when the central hub rotates along with the rotation of the pressure plate, the central sleeve component rotates along with the rotation of the outer cover component, and the first spiral surface and the second spiral surface are in contact with each other and generate pressing force along the axial direction.

Optionally, a third spiral surface opposite to the first spiral surface is arranged on the pressure plate, and a fourth spiral surface opposite to the second spiral surface is arranged on the central hub; the spiral angles of the third spiral surface and the fourth spiral surface are the same; when the third spiral surface and the fourth spiral surface are contacted with each other and reversely rotate, the third spiral surface and the fourth spiral surface generate reverse thrust along the axial direction.

Optionally, when the platen and the opposite two terminal surfaces of central hub are mutually pasted, first helicoidal surface and second helicoidal surface contact each other and both leave the surplus that waits to contact along the axial.

Optionally, the center hub is provided with the bulge towards the terminal surface of pressure disk, the pressure disk is provided with recess portion towards the terminal surface of center hub, the degree of depth of recess portion is greater than or equal to the height of bulge, the width of recess portion is greater than the width of bulge, when pressure disk and the opposite terminal surface of center hub paste mutually, the bulge is located in the recess portion.

Optionally, the center sleeve assembly further comprises a lifting plate, the center hub is installed between the lifting plate and the pressure plate, the lifting plate is fixedly connected with the pressure plate, a spring is arranged between the lifting plate and the center hub, and two ends of the spring are respectively fixedly connected with the lifting plate and the center hub; and the pressure plate and the central hub are axially close to each other, and the first spiral surface and the second spiral surface are contacted and axially pressed.

Optionally, when the lifting plate is subjected to a force pointing in the direction of the pressure plate, the spring is compressed, the lifting plate and the central hub are axially close, the pressure plate and the central hub are axially far away, and the first spiral surface and the second spiral surface are separated from contact.

Optionally, a friction disc and a driven disc are installed between the pressure disc and the central hub, the friction disc rotates along with the rotation of the outer cover assembly, the central hub rotates along with the rotation of the driven disc, and when the first spiral surface and the second spiral surface are mutually pressed along the axial direction, the driven disc rotates along with the rotation of the friction disc.

Optionally, the friction disc and the driven disc are attached together along with the mutual approaching of the central hub and the pressure plate along the axial direction, and friction force is generated after the friction disc and the driven disc are attached together.

Optionally, the friction disc and the driven disc are multiple and are arranged at intervals along the axial direction, and friction materials are arranged on the contact surface of the friction disc and the driven disc.

Optionally, the lifting plate is fixedly connected with the pressure plate through a bolt, the pressure plate is provided with a bolt column, the bolt column penetrates through the central hub, a bolt hole is formed in the bolt column, and the bolt penetrates through the lifting plate and the bolt hole to be fixedly connected.

As described above, the sliding clutch device of the continuously variable transmission of the invention has at least the following beneficial effects:

1. according to the invention, through the design of the first spiral surface and the second spiral surface, when the central hub of the device rotates along with the pressure plate, the force for pressing the central hub and the pressure plate is provided, so that the external force requirement for pressing the central hub and the pressure plate together is reduced, and because the minimum requirement for the grip strength of a driver during braking is to counteract the external force for pressing the central hub and the pressure plate, the design keeps the pressing force of the central hub and the pressure plate, and simultaneously reduces the magnitude of the grip strength required by the driver during braking.

2. According to the invention, through the design of the third spiral surface and the fourth spiral surface, when a driver brakes, the third spiral surface and the fourth spiral surface generate mutual pushing force, so that the separation action of the pressure plate and the central hub of the clutch device is more sensitive, and the power output between the power system and the wheels of a locomotive is more sensitive and quick.

Drawings

Fig. 1 shows a schematic view of a clutch device according to the present invention.

Fig. 2 shows a cross-sectional view of fig. 1.

Fig. 3 shows an exploded view of a clutch device according to the present invention.

Fig. 4 shows a schematic view of the central hub and platen of the present invention.

Fig. 5 shows a schematic view of a hub according to the invention.

Fig. 6 shows a schematic view of a platen of the present invention.

FIG. 7 is a schematic diagram of an external braking system according to the present invention.

Description of the reference numerals

A housing assembly a, a driven gear b and a center sleeve assembly c;

platen 1, first spiral surface 11, third spiral surface 12, groove portion 13, stud 14, and stud hole 15;

a central hub 2, a second helicoidal surface 21, a fourth helicoidal surface 22, and a projection 23;

riser plate 3, spring 4, friction disc 5, driven plate 6, friction material 7, bolt 8.

Detailed Description

Further advantages and effects of the present invention will become apparent to those skilled in the art from the disclosure of the present invention, which is described by the following specific examples.

Please refer to fig. 1 to 7. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or adjustments of the sizes, which are otherwise, used in the practice of the invention, are included in the spirit and scope of the invention which is otherwise, without departing from the spirit or scope thereof. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.

The following examples are given by way of illustration only. Various embodiments may be combined and are not limited to only what is presented in the following single embodiment.

In one embodiment of the present invention, as shown in fig. 1 and 2, the present invention provides a clutch device, which comprises a housing assembly a and a center sleeve assembly c, wherein the housing assembly a and a driven gear b are riveted together, a shock absorbing element is installed in the housing assembly a, external engine work is transmitted to the driven gear b through a crankshaft driving gear, and rotation of the driven gear b drives rotation of the housing assembly a, as in the prior art.

As shown in fig. 2 and 3, the center sleeve assembly c comprises a pressure plate 1, a center hub 2 and a lifting plate 3, wherein the center hub 2 is arranged between the lifting plate 3 and the pressure plate 1, the lifting plate 3 is fixedly connected with the pressure plate 1, a spring 4 is arranged between the lifting plate 3 and the center hub 2, and two ends of the spring 4 are respectively fixedly connected with the lifting plate 3 and the center hub 2; by the elastic force of the spring 4, the two opposite end surfaces of the lifting plate 3 and the central hub 2 are axially far away, and the two opposite end surfaces of the pressure plate 1 and the central hub 2 are axially close.

As shown in fig. 2 and 3, a friction disc 5 and a driven disc 6 are installed between the pressure disc 1 and the central hub 2, the friction disc 5 rotates with the rotation of the outer cover assembly a, the central hub 2 rotates with the rotation of the driven disc 6, when two opposite end surfaces of the pressure disc 1 and the central hub 2 are axially close to each other by the elastic force of the spring 4, the end surfaces of the friction disc 5 and the driven disc 6 are attached together to generate friction force, so that the driven disc 6 rotates with the rotation of the friction disc 5, namely, the central hub 2 rotates with the rotation of the outer cover assembly a; the central hub 2 is connected to the input shaft of the external gearbox, rotation of the central hub 2 driving rotation of the input shaft.

As shown in fig. 4 to 6, the improvement points of the device compared with the prior art are as follows: the pressing disc 1 is provided with a first spiral surface 11, the central hub 2 is provided with a second spiral surface 21, and the spiral angles of the first spiral surface 11 and the second spiral surface 21 are the same; during the axial approaching of the two opposite end faces of the pressure plate 1 and the central hub 2 to fit together, the first spiral face 11 and the second spiral face 21 are in contact and both generate pressing forces in the axial direction, which pressing forces together with the elastic force of the spring 4 press the two opposite end faces of the pressure plate 1 and the central hub 2.

The closer the two end surfaces of the pressure plate 1 opposite to the central hub 2 are pressed, the tighter the friction disc 5 and the driven disc 6 between the two are pressed, i.e. the greater the friction force between the friction disc 5 and the driven disc 6 is; because of the presence of the pressing force, the spring 4 of the device can be made smaller than the spring 4 of the prior art clutch device, while ensuring the same amount of friction between the friction disc 5 and the driven disc 6.

As shown in fig. 2 and 7, the grip force applied by the driver during braking is transferred to the lift plate 3 through the braking system, because the force transferred to the lift plate 3 can offset the elastic force of the spring 4, the spring 4 is compressed to ensure that the two opposite end surfaces of the central hub 2 and the pressure plate 1 are far away, the first spiral surface 11 and the second spiral surface 21 are separated from contact, the friction disc 5 and the driven disc 6 are not attached any more, and friction force is not generated any more, namely, the separation of the clutch device is realized, and the purpose of braking is achieved, so that the smaller the elastic force of the spring 4 is, the smaller the grip force applied during braking is.

Because of the design of the first spiral surface 11 and the second spiral surface 21, the device can select the spring 4 with smaller elasticity, the same performance as that of the spring 4 with larger elasticity in the prior art can be ensured, and the spring 4 with smaller elasticity means smaller holding force during braking, so that the design of the device solves the problem that the clutch device in the prior art is difficult to ensure that the functionality of the clutch device is not influenced while the holding force of a driver during braking is reduced.

In another embodiment, as shown in fig. 5 and 6, the platen 1 is provided with a third helicoid 12 opposite to the first helicoid 11, and the central hub 2 is provided with a fourth helicoid 22 opposite to the second helicoid 21; the helix angle of the third helix 12 and the fourth helix 22 is the same; when the third helicoid 12 and the fourth helicoid 22 are in contact with each other and rotate reversely, the third helicoid 12 and the fourth helicoid 22 generate opposite thrust along the axial direction, and when a driver brakes, the force generated by the third helicoid 12 and the fourth helicoid 22 and pushing away from each other makes the separation action of the pressure plate 1 and the central hub 2 of the clutch device more sensitive, namely the power output between the power system and the wheels of the locomotive is cut off more sensitively and rapidly.

In another embodiment, as shown in fig. 4 to 6, when two opposite end surfaces of the pressure plate 1 and the central hub 2 are attached, the first spiral surface 11 and the second spiral surface 21 are in contact with each other, and a margin to be contacted is remained along the axial direction, so that when a certain amount of wear exists between the friction disc 5 and the driven disc 6 due to friction, the remained margin effectively compensates the amount of wear, that is, the clutch device of the invention cannot bring torque attenuation due to the amount of wear after being used for a period of time, thereby prolonging the service life of the clutch device.

In another embodiment, as shown in fig. 5 and 6, the end surface of the central hub 2 facing the platen 1 is provided with a protruding portion 23, the end surface of the platen 1 facing the central hub 2 is provided with a groove portion 13, the depth of the groove portion 13 is greater than or equal to the height of the protruding portion 23, the width of the groove portion 13 is greater than the width of the protruding portion 23, when two opposite end surfaces of the platen 1 and the central hub 2 are attached, the protruding portion 23 is located in the groove portion 13, and the protruding portion 23 and the groove portion 13 are designed so that interference or detachment will not occur when the platen 1 and the central hub 2 relatively rotate.

In another embodiment, as shown in fig. 2 and 3, the friction disc 5 and the driven disc 6 are multiple and axially spaced, and the surface of the friction disc 5 contacting the driven disc 6 is provided with friction material 7, so that the friction force between the friction disc 5 and the driven disc 6 is further increased, i.e. the torque capacity of the clutch device is increased.

In another embodiment, as shown in fig. 3 and 6, the lift plate 3 is fixedly connected with the pressure plate 1 through a bolt 8, a bolt column is fixedly installed on the pressure plate 1, the bolt column penetrates through the central hub 2, a bolt hole 15 is formed in the bolt column, the bolt 8 penetrates through the lift plate 3 and the bolt hole 15 to be fixedly connected, and the clutch device is more convenient and faster to self-detach by the aid of the connection mode of the bolt 8 and the bolt hole 15, so that subsequent maintenance is facilitated.

In another embodiment, as shown in fig. 2 to 4, the friction disc 5 and the housing assembly a are connected by a tooth connection, and the driven disc 6 and the central hub 2 are connected by a key connection, which can be adjusted according to actual use conditions, and are not necessarily adopted, and the reason why the device adopts the two connection modes is to facilitate disassembly and maintenance.

In other embodiments, referring to fig. 3 to 6, the first spiral surface 11, the second spiral surface 21, the third spiral surface 12, the fourth spiral surface 22, the protruding portion 23, the groove portion 13, the spring 4, the bolt 8, the stud 14 and the stud hole 15 of the present device are all plural and are equally spaced along the circumferential direction, and this design makes the structural stability of the present clutch device better.

In summary, according to the design of the first spiral surface 11 and the second spiral surface 21, when the central hub 2 of the device rotates along with the pressure plate 1, the force for pressing the central hub 2 and the pressure plate 1 is provided, so that the external force requirement for pressing the central hub 2 and the pressure plate 1 together is reduced, and the minimum requirement for the grip strength of a driver during braking is to offset the external force for pressing the central hub 2 and the pressure plate 1, so that the design maintains the pressing force of the central hub 2 and the pressure plate 1 and simultaneously reduces the required grip strength of the driver during braking; meanwhile, through the design of the third spiral surface 12 and the fourth spiral surface 22, when a driver brakes, the third spiral surface 12 and the fourth spiral surface 22 generate a mutual pushing force, so that the separation action of the pressure plate 1 and the central hub 2 of the clutch device is more sensitive, namely, the power output between a power system and wheels of a locomotive is cut off more sensitively and rapidly. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. A clutch device comprising an outer housing assembly and a center housing assembly, characterized in that: the center sleeve assembly comprises a pressure plate and a center hub, a first spiral surface is arranged on the pressure plate, a second spiral surface is arranged on the center hub, and the spiral angles of the first spiral surface and the second spiral surface are the same;

when the central hub rotates along with the rotation of the pressure plate, the central sleeve component rotates along with the rotation of the outer cover component, and the first spiral surface and the second spiral surface are in contact with each other and generate pressing force along the axial direction.

2. A clutch device according to claim 1, wherein: the pressing plate is provided with a third spiral surface opposite to the first spiral surface, and the central hub is provided with a fourth spiral surface opposite to the second spiral surface; the spiral angles of the third spiral surface and the fourth spiral surface are the same;

when the third spiral surface and the fourth spiral surface are contacted with each other and reversely rotate, the third spiral surface and the fourth spiral surface generate reverse thrust along the axial direction.

3. A clutch device according to claim 1, wherein: when two opposite end surfaces of the pressure plate and the central hub are attached, the first spiral surface and the second spiral surface are in contact with each other, and a margin to be contacted is reserved between the first spiral surface and the second spiral surface along the axial direction.

4. A clutch device according to claim 3, wherein: the pressing plate is characterized in that a protruding portion is arranged on the end face, facing the pressing plate, of the central hub, a groove portion is arranged on the end face, facing the central hub, of the pressing plate, the depth of the groove portion is larger than or equal to the height of the protruding portion, the width of the groove portion is larger than the width of the protruding portion, and when two opposite end faces of the pressing plate and the central hub are attached, the protruding portion is located in the groove portion.

5. A clutch device according to claim 1, wherein: the center sleeve assembly further comprises a lifting plate, the center hub is arranged between the lifting plate and the pressure plate, the lifting plate is fixedly connected with the pressure plate, a spring is arranged between the lifting plate and the center hub, and two ends of the spring are respectively fixedly connected with the lifting plate and the center hub;

and the pressure plate and the central hub are axially close to each other, and the first spiral surface and the second spiral surface are contacted and axially pressed.

6. A clutch device according to claim 5, wherein: when the lifting plate is acted by a force pointing to the direction of the pressure plate, the spring is compressed, the lifting plate and the central hub are axially close, the pressure plate and the central hub are axially far away, and the first spiral surface and the second spiral surface are separated from contact.

7. A clutch device according to claim 1, wherein: and a friction disc and a driven disc are arranged between the pressure disc and the central hub, the friction disc rotates along with the rotation of the outer cover assembly, the central hub rotates along with the rotation of the driven disc, and when the first spiral surface and the second spiral surface are mutually pressed along the axial direction, the driven disc rotates along with the rotation of the friction disc.

8. A clutch device according to claim 7, wherein: the friction disc and the driven disc are attached together along with the mutual approaching of the central hub and the pressure plate along the axial direction, and friction force is generated after the friction disc and the driven disc are attached together.

9. A clutch device according to claim 8, wherein: the friction disk and the driven disk are arranged in a plurality of mode and are axially arranged at intervals, and friction materials are arranged on the contact surface of the friction disk and the driven disk.

10. A clutch device according to claim 5, wherein: the lifting plate is fixedly connected with the pressure plate through bolts, the pressure plate is provided with a bolt column, the bolt column penetrates through the central hub, the bolt column is provided with a bolt hole, and the bolts penetrate through the lifting plate and the bolt hole to be fixedly connected.